Rename Realm table

Question

I have a Gift table in my realm scheme. Now I need to rename Gift.class to UserBonus.class and add some new params(not a prob). What is the correct way to do this?

I know that realm.getTable() can return me the table, the problem is that old Giftexists in the schema but on fact I dont have Gift.class(now it is UserBonus and getTable() will return me new created table) so I cant get old gift table values and move them to new Bonus table.

The only way I see it, to left empty Gift.class and use it only for migration.

Thanks for any advice,
Yakiv

Answer 1

Maybe my answer will be outdated, but now in Realm on Android there is a method 'rename', which can rename table (model) in scheme. Code will be like this:

RealmSchema schema = Realm.getInstance().getSchema();
schema.rename("OldModelName", "NewModelName"); 

And it should work!

Also you can see all features in Migration (from 25 Jun 2015) - https://github.com/realm/realm-java/pull/1239

Answer 2

Currently I did implement it as follow:

• added new UserBonus.class
• added @Deprecated to Gift.class

• copy all data from Gift table to UserBonus table

  // added bonus types
  Table userBonus = realm.getTable(UserBonus.class);
  userBonus.addColumn(ColumnType.STRING, "localId");
  userBonus.addColumn(ColumnType.INTEGER, "type");
  userBonus.addColumn(ColumnType.INTEGER, "date");
  userBonus.addColumn(ColumnType.STRING, "userName");
  userBonus.addColumn(ColumnType.STRING, "userNumber");
  userBonus.addColumn(ColumnType.STRING, "credits");
  
  // move Gift to UserBonus
  RealmResults<Gift> gifts = realm.where(Gift.class).findAll();
  for (Gift gift :gifts) {
      userBonus.add(
              gift.getLocalId(),
              UserBonus.TYPE_FRIEND,
              gift.getDate(),
              gift.getUserName(),
              gift.getUserNumber(),
              gift.getCredits()
      );
  }
  realm.where(Gift.class).findAll().clear();